The best chicken and ham hoc pie

Milk, potato, onion, chicken breast (9%), water, beechwood smoked ham hock (8%) (pork (91%), water, salt, preservative (sodium nitrite)), white wine, double cream (milk), leek, cornflour, rapeseed oil, wholegrain mustard (water, mustard seed, spirit vinegar, mustard flour, salt, mustard bran, pimento), wheat flour (wheat flour, calcium carbonate, iron, niacin, thiamin), butter (milk), pork gelatine, parsley, salt, garlic, chicken extract, black pepper, thyme, turmeric, chicken fat, white pepper, preservative (sulphur dioxide), antioxidant (extracts of rosemary).